What bit depth and sample rate should I use?

Neither. I was basically saying, “WTF are you talking about?!?!”

WTF are you talking about?!?! Protection? You mean like Cosa Nostra? That kind of protection?

Maybe you know what you are talking about, but you just don’t know how to say it.

First off, I assume when you say sample buffers, you mean audio buffers. Do you know what an audio buffer is? I’ll explain it. An audio buffer is a reserved segment of memory. It is used to hold audio data to compensate for processing delays, aka latency. When the sample rate is higher, the audio data will pass through the buffer faster, and then the latency will be lower. The smaller the buffer, the less time it takes for audio data to pass through it, and the more processing power/CPU work is needed. So if your processor is not up to the task, you may have to raise your buffer/increase latency, or work at a lower sample rate in order to keep your buffer and latency down. There is no ‘protection’ going on.

Cheers.